2/10 Algebra-Which method?

Which of the following is not a method to solve systems?

• Elimination

• Difference of Squares

• Substitution

• Graphing

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

What is the best method do you use?

y = 6x − 11

−2x − 3y = −7

• Graphing

• Substitution because a variable is defined

• Elimination because both equations are in standard form.

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What variable do you eliminate?

4x + 8y = 20

−4x + 2y = −30

• X because they have opposite signs

• Y because they have opposite signs

Tags

CCSS.HSA.REI.C.5

CCSS.HSA.REI.C.6

What is the proper set up to solve the equation?

-7x -2y= -13

x = 2y+11

• -7(11) -2y = -13

• -7(2y +11)-2y = -13

• -7x -2(11) =-13

• -7x - 2(2y+11)= -13

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.C.6

What variable do you eliminate, and what do you multiply the equation(s) by?

5x + y = 9

10x − 7y = −18

• You eliminate x, and multiply the top equation by -2

• You eliminate y, and multiply the top equation by 7

Tags

CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

Which is the best method for solving this system of equations?

-4x-2y=-12

4x+8y=-24

• Substitution

• Elimination

• Equal Values

Which is the best method for solving this system of equations?

8x + 4y = 12

y = -2x + 3

• Substitution

• Equal Values

• Elimination